---
title: Publishers.MapKeyPath3.Output
framework: combine
role: symbol
role_heading: Type Alias
path: combine/publishers/mapkeypath3/output
---

# Publishers.MapKeyPath3.Output

The kind of values published by this publisher.

## Declaration

```swift
typealias Output = (Output0, Output1, Output2)
```

## Discussion

Discussion This publisher produces three-element tuples, where each menber’s type matches the type of the corresponding key path’s property.

## See Also

### Declaring supporting types

- [Publishers.MapKeyPath3.Failure](combine/publishers/mapkeypath3/failure.md)